How much does a 3.00 to 4.99ct G I1 natural princess diamond cost?

As of September 2026, 3.00 to 4.99ct G I1 natural princess diamonds typically cost £6,681 GBP to £20,790 GBP, with a median price of £9,424 GBP. There are currently 5 diamonds matching this specification available across retailers.

Where can I find the best price on a G I1 princess diamond?

About 45% of these diamonds are available at multiple retailers, with an average price spread of 102%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct G I1 Natural Princess

Quick answer

As of September 2026, there are 5 natural princess diamonds with G colour and I1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £6,681 GBP to £20,790 GBP, with a median of £9,424 GBP. At least 12 retailers stock this exact specification, and 45% of the stones appear at more than one of them, with an average price spread of 102%. Half of all listings fall between £3,205 GBP and £7,896 GBP per carat. Over the last 30 days the median price moved -0.6% and the number of listings moved -89.8%.

Three of the best scored stones at this specification right now:

3.09ct Princess G I1, IGI, score 80 of 100, from £6,914 GBP

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Princess natural stones in the index: 2,073 USD per carat, -3.2% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

Lowest Price

£6,526 GBP

Highest Price

£34,756 GBP

Average Price

£12,830 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

45.5%

Price Spread

101.6%

30-Day Price Trend

-0.6%

30-Day Supply Change

-89.8%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$6,239/ct

10th Percentile

$3,529

Median

$6,239

90th Percentile

$13,997

Score Distribution

5 diamonds scored across 3 quality tiers

Excellent

1 (20.0%)

Very Good

3 (60.0%)

Average

1 (20.0%)

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Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1